function y = auglinb(x)
%AUGLINB(m=20) Fuction
%x0=[1,1,...,1]
%fmin=4.6341
%Author:caili
n=length(x);
y=0;
m=20;
for i=1:m
    y1=-1;
    for j=1:n
        y1=y1+i*j*x(j);
    end
    y=y+y1^2;
end